I have taken over a number of new teams and I am trying to clear or reset the saved lineups but I am having problems. I don't seem to be able to totally clear a lineup at all and when I try to save new lineups the program uses the the players fielding position in the old lineup and I can't get it to accept a change of position. I keep getting not a valid lineup messages.
Can anyone tell me how to solve this problem?

Thanks
Nick